X-Git-Url: https://git.cworth.org/git?p=tar;a=blobdiff_plain;f=m4%2Frpmatch.m4;h=e4c986d8ecc6bb2df88cb0bc9b5d4dfce3a98ec9;hp=4a471ac860828c1176dba68d27496d28702e01ec;hb=cf7169a2ede9bb08b71de68fe0c8bbecf827abe6;hpb=138fc7e67e3d9845cd7d81aad0e9c7724784f9b9

diff --git a/m4/rpmatch.m4 b/m4/rpmatch.m4
index 4a471ac..e4c986d 100644
--- a/m4/rpmatch.m4
+++ b/m4/rpmatch.m4
@@ -1,16 +1,32 @@
-# rpmatch.m4 serial 5
-dnl Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+# rpmatch.m4 serial 7
+dnl Copyright (C) 2002-2003, 2007-2008 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
 
 AC_DEFUN([gl_FUNC_RPMATCH],
 [
+  dnl Persuade glibc <stdlib.h> to declare rpmatch().
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
   AC_REPLACE_FUNCS(rpmatch)
   if test $ac_cv_func_rpmatch = no; then
+    HAVE_RPMATCH=0
     gl_PREREQ_RPMATCH
   fi
 ])
 
 # Prerequisites of lib/rpmatch.c.
-AC_DEFUN([gl_PREREQ_RPMATCH], [:])
+AC_DEFUN([gl_PREREQ_RPMATCH], [
+  AC_CACHE_CHECK([for nl_langinfo and YESEXPR], gl_cv_langinfo_yesexpr,
+    [AC_TRY_LINK([#include <langinfo.h>],
+       [char* cs = nl_langinfo(YESEXPR); return !cs;],
+       [gl_cv_langinfo_yesexpr=yes],
+       [gl_cv_langinfo_yesexpr=no])
+    ])
+  if test $gl_cv_langinfo_yesexpr = yes; then
+    AC_DEFINE([HAVE_LANGINFO_YESEXPR], 1,
+      [Define if you have <langinfo.h> and nl_langinfo(YESEXPR).])
+  fi
+])